I did build one of those filter clunks, but I got the bright idea of putting in my 5 gal fuel tank. The high volume pump I used sucked the thing shut and the paper kind of mashed all together and wouldn't pass fuel after that. Never got around to making another one.
My little header tank with a clunk works good. I do cuban 8's, loops, rolls etc and it runs fine.
Have landed and taxied back with just vapors in the header tank and it's still running. Amazing!

I think that paper filter clunk is a good idea, those paper filters filter to about 10 micron's I believe.
I have a large paper one in the line from my 5 gal tank I use to fuel my plane.
Haven't had to clean a filter since I put it in.
I check them and they're always clean.